CN210121718U

CN210121718U - Liner plate for butt welding of round pipes

Info

Publication number: CN210121718U
Application number: CN201920440222.3U
Authority: CN
Inventors: 方顺生
Original assignee: Zhejiang Dadi Steel Structure Co Ltd
Current assignee: Zhejiang Dadi Steel Structure Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-03-03
Anticipated expiration: 2029-04-02

Abstract

The utility model discloses a liner plate for a circular tube butt welding seam, relating to the field of welding tools; the liner plate comprises a liner plate main body for lining a circular pipe, wherein the liner plate main body is provided with a hole expanding and slotting, one end of the slotting is communicated with the hole expanding, and a hole expanding screw for expanding the hole expanding is connected with the inner thread of the hole expanding; the utility model discloses as long as twist the reaming screw during the use, thereby the reaming enlarges and makes the liner panel body expand, the tight pipe internal surface in liner panel surface top to the liner panel is fixed on the pipe, convenient to use.

Description

Liner plate for butt welding of round pipes

Technical Field

The utility model belongs to the welding tool field, in particular to a liner plate for pipe butt weld.

Background

In order to guarantee welding quality, reduce welding cost and improve welding efficiency in steel structure construction, a welding liner plate needs to be placed on the back of a groove of a steel member for welding. The setting of present pipe component liner board is comparatively simple, and the support puts into the annular liner board of adaptation at pipe component tip, then welds after the temporary fixation, and the liner board often adopts the mode of spot welding to adopt the temporary fixation, but this kind of temporary fixation's mode can cause the injury to the base metal, needs the liner board of avoiding spot welding, and the current liner board that can avoid spot welding uses the step troublesome.

Chinese patent No. CN205362954U, published by the assignee of the present invention, 20160706 discloses a circular tube butt welding slip liner plate, which is a circular ring plate structure, the outer surface of which is separately provided with two shift levers at intervals, both of which are vertically arranged perpendicular to the outer surface of the circular ring plate structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the troublesome shortcoming of prior art use step, providing one kind when using as long as twist the reaming screw into reaming, thereby the reaming enlarges and makes the liner panel body expand, the tight pipe internal surface in liner panel surface top to the liner panel is fixed on the pipe, convenient to use for the liner panel of pipe butt weld.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a liner plate for pipe butt weld, is including the liner plate main part that is used for lining the pipe, be equipped with the reaming in the liner plate main part and crack, the one end and the reaming intercommunication of cracking, reaming female connection has a reaming screw that is used for enlarging the reaming.

When using, only need to put pipe one end with the liner panel main part, then twist the reaming screw in the reaming, the size of reaming screw is greater than reaming aperture, reaming grow after the reaming screw twists, open cracks, the external diameter of liner panel main part can expand this moment to the lateral surface of liner panel main part can tightly ground pressure on the pipe inside wall, thereby the liner panel main part firmly fix on the pipe, then embolia another pipe again, just can weld at last, the utility model discloses avoided electric welding, protected the parent metal, use steps is very convenient.

Preferably, the end of the stud of the counter-bore screw abuts against the inner side wall of the circular tube. After the double-screw bolt of reaming screw is screwed into the reaming, the double-screw bolt of reaming screw is leaned on the inside wall of pipe, has great frictional force between reaming screw and the pipe inside wall to the skid resistance between liner plate main part and the pipe has further been increased.

Preferably, opposite sides of the counterbore are provided with said slits. The slots are arranged on the two opposite sides of the reaming hole, when the reaming hole is expanded, the slots on the two sides are symmetrically opened, so that the better symmetry is realized, and in addition, the reaming hole is prevented from being torn when being expanded, thereby influencing the fixing effect.

Preferably, the direction of the slit is parallel to the axis of the circular tube. The direction of the seam is parallel to the axis of the round tube, so that the opening distance of the seam can increase the expansion degree of the liner plate main body to the maximum extent.

Preferably, one end of the slit, which is far away from the hole expansion, is provided with an anti-cracking hole, and the anti-cracking hole is circular. Increase and establish anti-crack hole, when the reaming enlarges and drives and open, prevent to crack and tear, anti-crack hole is circular, reduces stress concentration, further prevents to crack and tear, thereby has guaranteed the utility model discloses a stability.

Preferably, the hole diameter of the enlarged hole is equal to or greater than the plate thickness of the gasket plate body. The lining plate main body is generally made of mild steel, the ductility is good, and extensive tests show that the larger the hole diameter of the hole is, the larger the expansion of the lining plate main body is, so that for a certain lining plate main body, if the hole diameter of the hole is too small, the expansion of the lining plate main body is small, and finally, the advantage of the material of the lining plate main body cannot be fully exerted, so that waste is caused, and therefore, the plate thickness of the hole diameter larger than or equal to the lining plate main body is good.

Preferably, the thickness of the gasket plate main body is 1.5 times or more the diameter of the crack-preventing hole. Through extensive tests, the anti-cracking effect is better when the pore diameter of the anti-cracking hole is more than or equal to 1.5 times of the thickness of the liner plate main body.

The utility model has the advantages that: when the expansion device is used, the expansion screw is screwed into the expansion hole, so that the gasket plate body is expanded, the outer surface of the gasket plate tightly pushes the inner surface of the circular pipe, and the gasket plate is fixed on the circular pipe and is convenient to use.

Drawings

Fig. 1 is a side view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view taken along the axis of the circular tube after the utility model is placed into the circular tube and the reaming screw is screwed in;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

fig. 6 is a partial enlarged view of fig. 5 at D.

In the figure: the gasket plate comprises a gasket plate main body 1, a hole expanding 2, a slot 3, a circular pipe 4, an anti-cracking hole 5 and a hole expanding screw 6.

Detailed Description

The invention will be further explained in detail with reference to the drawings and the following detailed description:

example (b):

fig. 1 to 6 are a liner plate for pipe butt weld, including liner plate main part 1 that is used for lining pipe 4, liner plate main part 1 is the ring platelike structure, be equipped with reaming 2 on liner plate main part 1, reaming 2 is circular, 2 relative both sides of reaming all are equipped with one and open a

seam

3, 3 one end and reaming 2 intercommunication open a seam, 3 other ends of opening a seam are equipped with anti-cracking hole 5, anti-cracking hole 5 is circular,

anti-cracking hole

5 and 3 intercommunications open a seam, open a seam 3 and pipe 4's axle is parallel, 2 female connections in reaming have one to be used for expanding reaming 2 reaming screw 6, the aperture more than or equal to liner plate main part 1 of reaming 2 is thick, the thick of the liner plate main part 1 that aperture more than or equal to 1.5 times of anti-cracking hole 5.

The utility model discloses the use: the terminal surface to liner plate main part embedding pipe, the position is adjusted, then twists the reaming screw in the reaming the inside, and the size of reaming screw will be greater than reaming aperture, along with the reaming screw twists the reaming, and the reaming is slowly grow, and the crack of reaming both sides is slowly opened, and liner plate main part is slowly tight in the intraductal lateral wall top of pipe to prevent the easy removal of liner plate main part, then embolia another pipe again, then just can weld.

Claims

1. The utility model provides a liner plate for pipe butt weld, is including the liner plate main part that is used for lining the pipe, its characterized in that, be equipped with the reaming in the liner plate main part and crack, the one end and the reaming intercommunication of cracking, reaming female connection has a reaming screw that is used for enlarging the reaming.

2. A liner panel for butt welds of tubulars as claimed in claim 1, wherein the stud end of the counter-bore screw abuts the inside wall of the tubular.

3. A liner panel for use in butt welds of round pipes as claimed in claim 1, wherein the slits are provided on opposite sides of the counterbore.

4. A liner panel for use in butt welds of round pipes as claimed in claim 1, wherein the slit is oriented parallel to the axis of the round pipe.

5. A liner panel for a butt weld of round pipes as claimed in claim 1 or claim 2 or claim 3 or claim 4 wherein the slit is provided with a crack-preventing hole at the end remote from the counterbore, the hole being circular.

6. A liner panel for a butt weld of round pipes as claimed in claim 1 or 2 or 3 or 4 wherein the hole diameter of the counterbore is equal to or greater than the panel thickness of the liner panel body.

7. The laying plate for a butt weld of round pipes as claimed in claim 5, wherein the hole diameter of the crack preventing hole is 1.5 times or more the plate thickness of the laying plate main body.